Harmonic Drive MMA Series, Руководство пользователя, Страница: 23 / 62

1-7 Mechanical accuracy
1-12
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1-7 Mechanical accuracy
The mechanical accuracies of the output shaft and mounting flange for MMA series motors are shown
below:
Unit [mm]
Accuracy items MMAB09 MMAB12 MMAB15 MMAA21A
1. Output shaft surface runout
0.020 0.020 0.040 0.040
2. Deflection of output shaft
0.020 0.020 0.040 0.040
3. Squareness of the mounting surface
to the output shaft
0.080 0.080 0.090 0.100
4. Squareness of the mounting surface
to the output shaft
0.065 0.065 0.085 0.090
5. Concentricity of the mounting surface
to the output shaft
0.050 0.050 0.050 0.060
6. Concentricity of the mounting surface
to the output shaft
0.045 0.045 0.055 0.065
Note: All values are T.I.R. (Total Indicator Reading).
The methods for measurement are as follows:
1
Output shaft surface runout
The indicator on the fixed part measures the
axial runout (maximum runout width) of the
end surface of the output shaft per
revolution.
2
Deflection of output shaft
The indicator on the fixed part measures the
radial runout (maximum runout width) of the
output shaft of the output shaft unit per
revolution.
3,4
Squareness of the mounting surface to
the output shaft
The indicator on the output shaft reference
position measures the axial runout
(maximum runout width) of the outermost
circumference of the mounting surface (both
on the output shaft side and opposite side)
per revolution.
5,6
Concentricity of the mounting surface to
the output shaft
The indicator on the output shaft reference
position measures the radial runout
(maximum runout width) of the fitting part
(both on the output shaft side and opposite
side) per revolution.
A
1
2
3 A
5 A
◎
4 A
6 A
◎